I am trying to buy this rig at the time of Aberdeen NCIX Grand Opening or the Online sales they got through the week. What do you think about my build? Any opinions about changes you'd make to this set-up?

You're on the right track, however you can save a bit of cash too. Also, NCIX has a special at the new store if you live anywhere near there. You can get a free copy of Windows 7 Home Premium if your purchase is over $1000 (easy for what you want).

I will take a look today at job for the size of the ATX bay in three and nine hundred ( 902 is same ) and I will see if they are able to fit a so long card. If there is a hard drive it's not for sure. without hard drive or placed anywhere except in front of the card, maybe but...wait for confirmation;)

And its a great price. Quite a bit cheaper than the 902 and you can PM down to $85:00 at NCIX. I just got this case from NCIX.
There is 13inches of play for a Video card in the Haf 922 case.
Hope that helps